The patient’s fasting blood glucose of 9.3 mmol/L is one of the more serious conditions. If the patient has not been diagnosed with diabetes in the past and this time the fasting blood glucose 9.3mmol/L is detected, the patient should be seen immediately, relevant tests should be performed, and the body should be fully evaluated. If the diagnosis of diabetes is established, the patient should be provided with diabetes health education and active symptomatic treatment. If the patient has a previous history of diabetes and a fasting blood glucose of 9.3 mmol/L is detected, it means that the patient’s blood glucose is not well controlled and the dosage of hypoglycemic drugs needs to be adjusted. Diabetes cannot be cured, but it can be treated reasonably to keep blood sugar under ideal control and ensure the quality of life and longevity of most diabetic patients. However, if diabetes is not treated regularly and cannot be effectively controlled, the body is continuously in a high blood sugar state, which will cause various complications, such as infection, atherosclerosis, cardiovascular disease, peripheral neuropathy, diabetic nephropathy, ketoacidosis, etc., which will seriously damage the patient’s health and life expectancy.